ofxVVISF

Introduction

This openFrameworks addon wraps the VVISF-GL cpp library from VIDVOX. It allows you to use ISF files inside openFrameworks with a simple setup.

VVISF

ISF stands for "Interactive Shader Format", and is a file format that describes a GLSL fragment shader, as well as how to execute and interact with it (the official specification can be found here). VVISF is a cross-platform c++ library that implements the ISF protocol with support for a number of common SDKs (OS X, iOS, GLFW, and Qt) and GL environments (most versions of GL- both ES and desktop- are supported).

VVGL

VVGL is a small library that performs rudimentary GL rendering, focusing mainly on texture generation/pooling and render-to-texture operations. Its primary purpose is to provide a simple consistent interface for performing these basic GL operations while obfuscating any platform-specific or environment-specific GL implementation details. VVISF is built on top of VVGL, but you don't need to be intimately familiar with VVGL to use VVISF.

License

See License

Installation

• clone the addon into the openFrameworks/addons/ folder

• setup the submodule by running

  git submodule init

  git submodule update

• Create a project with the project generator or create a projects by copying the examples

• When creating a project you need to add preprocessor defines to enable the VVGL_SDK_GLFW flag.

• Edit the command line options to add /bigobj
• ESnjoy! Examples

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example-grabber

This example shows you how to use a ofVideoGrabber as a input source for an ISFScene.

example-fft

This example shows you how to use audio as an input source for an ISFScene. It uses ofxFft to generate the fftImage and the raw waveform to generate the waveImage. See the comments in the code to follow along.

example-chain

This example shows you how to chain multiple ISFScenes together in a VFX chain.

example-mixer

This example shows you how to simply mix between two ISFScenes

example-generator

This example shows you how to use an ISFScene with a generator.

example-transitions

This example shows you how to use multiple ISFScenes to feed a transition.

Compatibility

tested with 0.10+ VS2017

Known issues

Project generator might not work on macOS. testers welcome!

Version history

0.0.1 initial release